From 63aa7c2249c3edd2380ec96f7a7ff35b1c499912 Mon Sep 17 00:00:00 2001 From: Leo Date: Thu, 26 May 2022 04:35:47 +0200 Subject: [PATCH] Adding review of Bittorrent Economics paper (#81) * Adding review of Bittorrent Economics paper * Clarify point about old files credits in papers/Economics_of_BitTorrent_communities/README.md Co-authored-by: Dmitriy Ryajov Co-authored-by: Dmitriy Ryajov --- .../README.md | 38 +++++++++++++++++++ 1 file changed, 38 insertions(+) create mode 100644 papers/Economics_of_BitTorrent_communities/README.md diff --git a/papers/Economics_of_BitTorrent_communities/README.md b/papers/Economics_of_BitTorrent_communities/README.md new file mode 100644 index 0000000..fcf927c --- /dev/null +++ b/papers/Economics_of_BitTorrent_communities/README.md @@ -0,0 +1,38 @@ +# Economics of BitTorrent communities + +## Authors + +- Ian A. Kash - iankash@microsoft.com +- John K. Lai - jklai@seas.harvard.edu +- Haoqi Zhang - hq@eecs.harvard.edu +- Aviv Zohar - avivz@microsoft.com + +### DOI + +- https://doi.org/10.1145/2187836.2187867 + +## Summary + +The paper is a study of a BitTorrent community called DIME, where users share live concert recordings. The community has around 100K users and the study analyses data gathered over 6 months. + +### Main ideas + + * The DIME system enforces a ratio of at least 0.25: 4 downloads for 1 upload + * Many users have a ratio above 1 (which shows an altruistic behaviour) + * New files are more attractive to users and have high demand at the beginning + * Users with high bandwidth Internet connections take advantage of new files to take credits + * Old files are no good to gain credit because they are not in high demand + * There are periods where downloads are free + * Users prefer to download old files during free periods + +### Observations + + * The paper does not give any numbers about the amount of data available in total + * The paper does not provide data about the file size distribution + * Overall the paper provides interesting data about how sharing communities behave but no data about the decentralized storage itself. + +### Other ideas + + * Some aspects of the demand for files with respect to their life could be applied to other decentralized storage systems + +